Bath Spa's management firm, the Thermae Development Company, has been forced to withdraw 10 spas from public use because of 'black and green' mould appearing in steam rooms, showers and even the roof-top swimming pool.
It is understood talks are taking place between Grimshaw, Thermae and the venue's owner, Bath and North East Somerset Council (BANES) over who will foot the bill.
BANES has been unable to put a timescale on the repairs or who will eventually be charged for the additional work. Speaking to the newspaper a spokeswoman said: 'The council is the free-holder of the building and Thermae, which has a 50-year fully repairing lease, is responsible for operation and maintenance.'
Construction of Bath Spa has been swamped by problems including peeling paint and leeks across floors. Contractor Mowlem was sacked last April and trouble-shooter Capita Symonds parachuted in to rescue the project. Grimshaw, however, was kept on board. (Council acts ahead of possible further Bath Spa legal wrangles).
BANES is understood to be still considering legal action against Mowlem and possibly Grimshaw but was not prepared to comment on progress. Grimshaw was also unavailable for comment.